if(AX_ENABLE_VR)
  set(_AX_VR_HEADER
    vr/VRBase.h
    vr/VRGenericHeadTracker.h
    vr/VRDistortion.h
    vr/VRGenericRenderer.h
    vr/VRDistortionMesh.h
  )
  set(_AX_VR_SRC
    vr/VRDistortion.cpp
    vr/VRDistortionMesh.cpp
    vr/VRGenericRenderer.cpp
    vr/VRGenericHeadTracker.cpp
  )
endif()
